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LEGO Technic Mounting for Arduino & Battery Pack Boards 



i 



Make Projects 



build, hack, tweak, share, discover,' 



LEGO Technic Mounting for 



Arduino & Battery Pack Boards 



Written By: David Scheltema 



PARTS: 



Arduino Mounting board (1) 

Technic Beams: 15M (4) 

Technic Beams: 11M (4) 

Battery Mounting board (1) 

2M Friction Snap with Cross Hole (6) 

Connector Pin with Ridges (8) 

Connector Peg with Cross Axle (8) 



SUMMARY 

Supplemental adapting is the goal for this project. 

If you have ever taken a new adaptor board and tried to use it without thinking through its 
integration into a project you will know well that it is often only a first step. 

The guide that follows is a method for taking an extant adaptor board and taking step two; 
i.e., adapting the board to the design principles and function making it clean and functional. 

Though this design is specific to the boards that I link to in the parts section of the guide you 

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LEGO Technic Mounting for Arduino & Battery Pack Boards 

can still glean some basic ideas from the guide such as offsetting to allow for space, pin 
placement techniques, and simplicity in design — these are universal to a good 
construction. 



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LEGO Technic Mounting for Arduino & Battery Pack Boards 






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• Attach Arduino and battery holder 
to the mounting boards. 

• Since I assume you already have 
these pieces I will leave it up to 
you to figure out the necessary 
screw and nut size. 

• Note: There is no need to cut down 
the screws. The design you are 
building will accommodate their 
length. 



Step 2 






• Take two 15M beams and connect them with two Connector Pins with Ridges (a.k.a 
friction pins). 

• Offset the pins' placement one hole from the end of the beam on either side. 

• Repeat this step so that you have two of these beams. 



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LEGO Technic Mounting for Arduino & Battery Pack Boards 




Gather the Battery Mounting Board and six of the Friction Snap with Cross Hole. 

Orient your mounting board so that the short side is facing you. 

Drop the pins into the two corners closest to you — one in each hole. 

Count up the long side of the board nine holes and drop in another pin. Make sure there 
are nine holes between the pin in the corner and the pin you just dropped in. 

Count three more holes and drop a pin in. Note this pin is one hole from the corner. 



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LEGO Technic Mounting for Arduino & Battery Pack Boards 






Take the beams you made in Step One and the pins that you have placed through the 
holes in the Battery Mounting Board from Step Two and connect. 

Your Battery Mounting Board is now secure between the pins' female adaptors and the 
beams. 

Make sure you connect the beams so that each of the end holes has a pin running through 
it. 



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LEGO Technic Mounting for Arduino & Battery Pack Boards 






Grab two 11M beams and two friction pins. 

Connect the two beams together using the second hole from the end of the beam 
Repeat this step. 






• Round up eight pins with cross axles. 

• Four of the pins will attach via the cross axle side in to the female pins that protrude on 
the battery mounting board. 

• The other four pins will attach to the two beams just built at the end holes and with cross 
axles up. 



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LEGO Technic Mounting for Arduino & Battery Pack Boards 





• Attach the pins protruding from the 
battery mounting board to the two 
11M beams. 

• Make sure the cross axle pins on 
the 1 1 M beams are at the top of the 
structure. 



Step 8 




• Finally, take your Arduino mounting 
board and slip it onto the beams 
and pins on the Battery Mounting 
Board. 

• You could just rest the Arduino 
board on these pins, but since you 
used cross axle pins you might as 
well use a full or half bushing to 
lock down your Arduino. 



The LEGO parts can all be found in the NXT 2.0 kit or you can even substitute your own similar 
parts. This guide is as much a design experiment as it is a rote for execution. 

I have not included the optional parts necessary for securing the final level of the adaptor; 
however, any LEGO Technic bushing or half bushing will do — you will need four of them. 



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LEGO Technic Mounting for Arduino & Battery Pack Boards 
The mounting boards need to be built or bought. 



This document was last generated on 201 3-02-1 6 09:53:20 AM. 



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